<!doctype html>
<html lang="en-US">
<head>
    <meta charset="UTF-8">
    <title></title>
    <script type="text/javascript" src="./bower_components/jquery/dist/jquery.js"></script>
</head>
<body>
<div class="outer">
    <div class="padding" id="test">
        <div id="inner">
            test
        </div>
    </div>
</div>

<style type="text/css">
    *{
        box-sizing: border-box;
    }
    .outer{
        width:500px;
        border:1px solid red;
    }
    .padding{
        border:1px solid black;
        padding: 0 15px;

    }
</style>

<script type="text/javascript">
      debugger;
</script>
</body>
</html>